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CHttpConnection* GetHttpConnection(

   LPCTSTR pstrServer,

   INTERNET_PORT nPort = INTERNET_INVALID_PORT_NUMBER,

   LPCTSTR pstrUserName = NULL,

   LPCTSTR pstrPassword = NULL 

);

CHttpConnection* GetHttpConnection(

   LPCTSTR pstrServer,

   DWORD dwFlags,

   INTERNET_PORT nPort = INTERNET_INVALID_PORT_NUMBER,

   LPCTSTR pstrUserName = NULL,

   LPCTSTR pstrPassword = NULL 

); 

pHttpFile->SendRequest();

pHttpFile->QueryInfoStatusCode(m_dwStatusCode);

pHttpFile->QueryInfo(HTTP_QUERY_RAW_HEADERS_CRLF, szHeaders);

switch(m_dwStatusCode)

{

case HTTP_STATUS_OK:

{

CString strResult;

while(pHttpFile->ReadString(strResult))

{

strResult.ReleaseBuffer();

}

}

break;

case HTTP_STATUS_DENIED: // unauthorized

{

CString realm;

CString nonce;

CString cnonce("0000000000");

CString str;

pHttpFile->QueryInfo(HTTP_QUERY_WWW_AUTHENTICATE, szHeaders);

delete pHttpFile;

int curPos = 0;

CString resToken;

CString key;

CString val;

resToken = szHeaders.Tokenize(_T(" "), curPos);

while(!resToken.IsEmpty())

{

// Obtain next token

key = resToken = szHeaders.Tokenize(_T("="), curPos);

val = resToken = szHeaders.Tokenize(_T("\""), curPos);

resToken = szHeaders.Tokenize(_T(" "), curPos);

if(0 == key.Compare(_T("nonce"))) nonce = val;

if(0 == key.Compare(_T("realm"))) realm = val;

}

CString HA1,HA2,RES;

HA1 = md5gen(str = id+":"+realm+":"+pw);

HA2 = md5gen(str = CString("GET:")+query);

RES = md5gen(str = HA1+":"+nonce+":00000001:"+cnonce+":auth:"+HA2);

pHttpFile = pHttpConnect->OpenRequest(CHttpConnection::HTTP_VERB_GET, strObject);

auth.Append(_T("Authorization: "));

auth.Append(szHeaders);

auth.Append(_T(",username=\""));

auth.Append(id+"\",");

auth.Append(_T("uri=\""));

auth.Append(query+"\",");

auth.Append(_T("cnonce=\""));

auth.Append(cnonce+"\",");

auth.Append(_T("nc=00000001,response=\""));

auth.Append(RES+"\",");

pHttpFile->AddRequestHeaders(auth);

pHttpFile->SendRequest();

pHttpFile->QueryInfoStatusCode(m_dwStatusCode);

pHttpFile->QueryInfo(HTTP_QUERY_RAW_HEADERS_CRLF, szHeaders);

pHttpFile->Read(content, pHttpFile->GetLength());

}

break;

default:

break;

}

if(pHttpFile) {pHttpFile->Close(); delete pHttpFile; pHttpFile = NULL; }

if(pHttpConnect) {pHttpConnect->Close(); delete pHttpConnect; pHttpConnect = NULL; }

if(pSession) {pSession->Close(); delete pSession; pSession = NULL; } 

#include <Wincrypt.h>

CString md5gen(CString input)

{

BYTE rgbHash[16];

BYTE *data;

int data_len;

DWORD cbHash;

CString ret;

CStringA str;

HCRYPTPROV hCryptProv;

HCRYPTHASH hHash;

str = input;

data = (BYTE *)str.GetString();

data_len = str.GetLength();

CryptAcquireContext(&hCryptProv, NULL, NULL, PROV_RSA_FULL, 0);

CryptCreateHash(hCryptProv, CALG_MD5, 0, 0, &hHash);

CryptHashData(hHash,(const BYTE *)data,data_len,0);

CryptGetHashParam(hHash, HP_HASHVAL, rgbHash, &cbHash, 0);

for (DWORD i = 0; i < cbHash; i++)

ret.AppendFormat(_T("%02x"), rgbHash[i]);

CryptDestroyHash(hHash);

CryptReleaseContext(hCryptProv,0);

return ret;

} 

String^ str2 = gcnew String(str.c_str());